Concrete flooring.



H. H. DUPUNT.

CONCRETE FLOOENG.

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1,081373. Patented Dec. 16, 1913.

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H nry H.Dutoon`'7 ATTORNF 'Uni n s.ne PATENT OFFICE HENHY H. DUIE'UN'E, OF INDINAPOLIS, INDIANA.

CONCRETE FLOORING.

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Speciicaton of Letters Petent. Patented 1791316, 1913- Application filed May 26, 1910. Serial No. 568516.

To ali 'whom '(725' may cmoern: a Be it known that I, Hit-Nur H. DUPONT, of Indanapolis, County of Marion, and thate of Indianzu have invented e certain ne and useful loncrete Flooring; and I do hereby detlare that the following; is a. full, clear, and exact description thercof retere'ce being had to the accompanying drewings. I

The object of this invention is to improve the construction of reinforced concrete flooring-and similar structures.

One feature of the invention .consists in making a einforced concrete floor-ing or 115 the like of previously tormed sections or beams made of concrte combined with skeleton tiles These sections or beans, after having been previcusly formed, are placed side by side in the flooring and their adjacent sides interlocked withsubsequently added concrcte fillin". These concrete beams are provided With. triangulerly disp'osed reinforcing wires embedded midway between the sides and with their upper angles mojecting above the heerns so as to form a row for the full length ot' the bean.

These Wires are tied to a. reint'orcing rod embedded in the beam and enable the beem I to be engaged by hoisting apparatus 'for lifting it into place and also project into the concrete filling which is added or lad .upon said benms after they are put in place in the floo-ing.

combined With' the foregoing is the further feature of Wooden stringers bein e; bedded in the concrete interlocking lling between each pair of beans and through which nailsor the like extend transversely for holding the stringers in lace, Whereby wooden flooring may be laid f dcsired.

4 The nature-ot this nvention Will be understood from the following description and claim and the aconpanying drewings.

In the drawings Fgure 1 is a perspective View of a ooncrete bcam or section after it is'formed and placed in the flooring With the histing chain attached. Fig. 22 is' a central longitudinal section through a portion of said be'am. Fi 3 is e transverse vertical section throug `a portion of the floor-ing with concrete flooring lsid. Fig. 4 's' the same with wooden ;fiooring laid.

` The flam-ing is formed of concrete beams,

like that shown in Figs. 1' and 2, associalted 55 together substentially as shown in Fgs. 3

and 4, with a suitable flooring surface added on top and plaste'ng added below.` T he beamsare previously fo rned and' consist of two series of siu'ilarlyforned hollow or slteloto tiles 10 placed beside each other eo with intervening),` filling 11 of concretc. These tiles have thei-r inner portions relatively thin as Compared with their outer portions, which, When placed together for receiring the concrete', form a trough-like 05 concavityr Along the up ;er corners of the tiles there are longitudinally extending doVe-tailed recesses 12 'which form in the finished beam continuous grooves.

In the concrete filling in each beam there 'w is a continuous reinforcing rod 13 near the bottom With an eye 14 at each end. From this red A-shaped Wires 15 extend upwardly above the surface of the concrete, said Wires being first Secured to the rod 13 and then 'ni bent up-wardly above the concrete and again Wrapped around the rod 13. This is continuous throughout the 'length of the beam so they present a row of A-shaped projections above the concrete as seen in Fig. 1. :30 Ublique reinforcing -ods 16 are connected with the rod 13 between its ends and extend at an-inclination through 'the conc'ete to and beyond the end near the upper surface and have eyes 14 at their outer ende. These beams are litted by suitable hoisting apparatus having' chains 20 with'hooks on the ends adapted to catch in the Wires 15 to the position in the flooring With the ends of the beans resting upon suitable hezms in the f'amc Work of the building or genci-ai structure. These beams are placed side by side, as shown in Figs. 3 and 4, and form. acontinuous unbroken surface on the. un: derside for the ceiling *21. After the beams above described ure laid, a concrete filling 22 is spread over the same so as to extendabovethe reinforcing Wires 15. The floor is strengthened by the pro jeclion of the Wircs 15 into its u'pper concrete filling. The adjacent beams are locked together by reason of the concrcte filling 22, filling the two dove-tailed grooves 12 in the adjccnt beams, as shown at 24: in 3 and 4. The concrete also fills a `pece be- 'Im tween the' lower porticns of euch pair ofbeams. This makes a very firm and strong' flooring Construction. The upper floor sur- `face may be made of concrete 25 spread upon the filling 22, or it may he a Wood, 11( floor-mg lad upon the concrete filling 22 and nailed .down to the Wooden stringers 275 which are embedded between each pair of beams and in the conerete filling 22 in the grooves 12. If desired, nnils 28, or the like, are'driven transversely through the 'stringers 27, so that the ends will'project i} into the; concrete filling 24 and further strengthen the structure.

What I clam as my iwention and desire to secure by Letters Patent is: lo A concrete beam consisting of an opposin g series of biles that-g constitute the 'sides and bottom of the bearh and longtudinally a; recessed upon their up'per sides to form a 1 w space between them, conc'ete filled in betWeen said series of tiles, a rod embedded longitudinally in the lower part of said Aconeretand a Wre connected With said rod HENRY H. DUPONT. W itnesses G. H. BOINK, O. M. MCLAUGHLIN.

presence of the 

